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If I'm reading it correctly, the Segment_of_* macros in shapes3.inc shave tiny
slices off the object as well as removing the pie-piece one expects. They are
unnoticeably small, except maybe to us obsessives.
Here's a patch to Segment_of_CylinderRing():
--- shapes3.inc.orig 2014-10-02 21:53:08.933523600 +1300
+++ shapes3.inc 2014-10-02 21:53:06.189366100 +1300
@@ -174,11 +174,11 @@
merge{
#end // then use merge!
- box { <-R_o+D,-D,0>,< R_o+D, H+D, R_o+D>
+ box { <-(R_o+D),-D,0>,< R_o+D, H+D, R_o+D>
rotate<0,0,0>
}// end of box
- box { <-R_o+D,-D,-R_o+D>,< R_o+D, H+D,0>
+ box { <-(R_o+D),-D,-(R_o+D)>,< R_o+D, H+D,0>
rotate<0, Segment_Angle,0>
}// end of box
It looks like other macros in shapes3 are affected similarly.
Great macros in there, by the way.
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